CN101328525B - A sealing device for a movable fume hood of a steelmaking converter - Google Patents

Abstract

The invention relates to the technical field of steelmaking converter equipment, in particular to a sealing device for a movable smoke hood of a steelmaking converter. In order to overcome the defects of high nitrogen consumption and high nitrogen content in coal gas of the existing converter movable smoke hood sealing technology, the invention provides a steel-making converter movable smoke hood sealing device which comprises a movable smoke hood, a movable smoke hood protection flange and a fixed flue, wherein the movable smoke hood and the movable smoke hood protection flange welded with the movable smoke hood protection flange are concentrically sleeved on the outer wall of the fixed flue, the outer wall of the fixed flue is provided with a follow-up sealing ring in a surrounding manner, and the follow-up sealing ring is arranged on the movable smoke hood protection flange. The invention solves the sealing problem of the movable smoke hood of the converter by a simple mechanical method, reduces the nitrogen content in the coal gas and improves the coal gas quality.

Description

A sealing device for a movable fume hood of a steelmaking converter

technical field

The invention relates to the technical field of steelmaking converter equipment, in particular to a sealing device for a movable smoke hood of a steelmaking converter.

Background technique

At present, the known converter movable hood adopts nitrogen sealing technology, which is an advanced technology to replace the water seal structure, but there are still large gaps between the converter movable hood and the fixed flue of the converter, high nitrogen consumption, and high nitrogen content in the gas components. high defect.

Contents of the invention

In order to overcome the defects of high nitrogen consumption and high nitrogen content in the gas of the existing converter movable fume hood nitrogen sealing technology, the present invention provides a steelmaking converter movable fume hood sealing device. The cost is low, and the quality of recovered gas can be improved.

In order to achieve the above object, the present invention provides a sealing device for a movable fume hood of a steelmaking converter, including a movable fume hood, a movable fume hood protection flange and a fixed flue, a movable fume hood and a movable fume hood protection flange welded as one It is concentrically set on the outer wall of the fixed flue, and its special feature is that the outer wall of the fixed flue is surrounded by a follow-up sealing ring, and the follow-up seal is set on the protective flange of the movable smoke hood; the follow-up seal is made of Composed of a number of single follow-up sealing devices that are continuously arranged around; the follow-up seal device is composed of a sealing steel plate, a spring device and a drum structure, and the sealing steel plate is arranged between the spring device and the movable smoke hood protection flange, and Cover most of the gap between the outer wall of the fixed flue and the protective flange of the movable hood to minimize the leakage area of the smoke; one end of the spring device is connected to the drum structure, and the drum structure is tightly fixed The outer wall of the flue, so that the follow-up sealing device is not subjected to too much vertical force on the outer wall of the fixed flue, so as to ensure that the sealing steel plate and the protective flange of the movable smoke hood maintain a follow-up relationship on the vertical plane; the other spring device One end is fixedly connected to the outer side of the movable smoke hood protection flange through a fixed threaded connection, and the spring device pushes the roller structure and the sealing steel plate of the follow-up sealing device to the outer wall of the fixed flue, so that the sealing steel plate and the fixed flue form a follow-up movement on the horizontal plane Relationship, so as to ensure the sealing effect.

The above-mentioned spring device is provided with a guide structure to maintain the stiffness of the spring device on the vertical plane, so as to ensure that the sealing steel plate and the movable smoke hood protection flange maintain a follow-up relationship on the vertical plane, thereby ensuring the sealing effect.

The plane of the above-mentioned sealing steel plate is sector-shaped.

Compared with prior art, the beneficial effect that the present invention produces is as follows:

The invention uses a simple mechanical method to solve the sealing problem of the movable hood of the converter, reduces the nitrogen content in the gas, and improves the quality of the gas.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a partial sectional view of FIG. 1 .

Fig. 3 is a plan view of the follower sealing device in the present invention.

1-sealed steel plate, 2-fixed threaded connector, 3-roller structure, 4-spring device,

5-Active hood protection flange, 6-Active hood, 7-Fixed flue, 8-Guide structure.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings.

Referring to Fig. 1 and Fig. 2, the present invention provides a sealing device for a movable fume hood of a steelmaking converter, comprising a movable fume hood 6, a movable fume hood protection flange 5 and a fixed flue 7, and the movable fume hood 6 and the integral welded The movable hood protection flange 5 is concentrically set on the straight cylindrical outer wall of the fixed flue 7 , and the outer wall of the fixed flue 7 is surrounded by a moving sealing ring, and the moving sealing ring is arranged on the movable hood protecting flange 5 . The follow-up sealing ring is composed of a plurality of single follow-up sealing devices which are continuously arranged around.

Referring to Fig. 2, the single follow-up sealing device composed of sealing steel plate 1, spring device 4 and drum structure 3 is arranged around the straight cylindrical outer wall of the fixed flue 7 of the converter, and falls on the movable hood protection flange 5 by its own weight.

The sealing steel plate 1 in the follow-up sealing device is arranged between the spring device 4 and the movable hood protection flange 5, and covers most of the gap between the outer wall of the fixed flue 7 and the movable hood protection flange 5 , so that the leakage area of the flue gas is reduced to a minimum; one end of the spring device 4 is connected with the drum structure 3, and the drum structure 3 is close to the outer wall of the fixed flue 7, so that the follow-up sealing device is subjected to the vertical force of the outer wall of the fixed flue. The force in the direction will not be too large, so as to ensure that the sealing steel plate 1 and the movable hood protection flange 5 maintain a follow-up relationship on the vertical plane; the other end of the spring device 4 is connected with the movable hood protection method The outer side of the blue 5 is fixedly connected, and the spring device 4 pushes the roller structure 3 and the sealing steel plate 1 of the follow-up sealing device to the outer wall of the fixed flue, so that the sealing steel plate 1 and the fixed flue 7 form a follow-up relationship on the horizontal plane, thereby ensuring the sealing effect .

The spring device 4 is provided with a guide structure 8 to maintain the rigidity of the spring device on the vertical plane to ensure that the sealing steel plate 1 can be closest to the fixed flue. When lifting, the sealing steel plate 1 and the movable smoke hood protection flange 5 maintain a follow-up relationship on the vertical plane, thereby ensuring the sealing effect.

Referring to Fig. 3, the plane of the sealing steel plate 1 of each follow-up sealing device is sector-shaped.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention shall be included in the protection scope of the present invention.

Claims (3)

1. steel-smelting converter movable smoke hood sealing arrangement, comprise movable gas hood, movable gas hood protection flange and fixing flue, movable gas hood and the movable gas hood protection flange concentric locking collar that is welded as a whole with it are loaded on fixedly flue outer wall, it is characterized in that: described fixedly flue outer wall is around being provided with the Follow-up seal circle, the Follow-up seal circle be arranged on movable gas hood protection flange above; Described Follow-up seal circle is made up of around the monomeric servo sealer of arranging plurality of continuous; Described servo sealer is made up of sealing steel plate, spring assembly and roller frame, and described sealing steel plate is arranged at spring assembly and protects between the flange with movable gas hood, and fixedly flue outer wall and movable gas hood protect the overwhelming majority in space between the flange to block; One end of described spring assembly is connected with roller frame, and described roller frame is close to fixedly flue outer wall; The other end of described spring assembly is fixedlyed connected with the movable gas hood protection flange outside by the retaining thread web member.

2. a kind of steel-smelting converter movable smoke hood sealing arrangement according to claim 1 is characterized in that: described spring assembly is provided with guide frame.

3. a kind of steel-smelting converter movable smoke hood sealing arrangement according to claim 1 is characterized in that: the plane of described sealing steel plate is a sector shape.

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